Clay-pulverizing and stone-separating machine.



No. 796,639. PATEN'TED AUG. 8, 1905.

J. P. HALL. CLAY PULVERIZING AND STONE SEPAEATING MACHINE.

APPLICATION FILED JULY 20,1904.

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CLAY PULVBRIZING AND STONE SEPARATING MACHINE.

APPLICATION IILED JULY 20.1904.

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CLAY PULVBRIZING AND STUNE SEPARAIING MACHINE.

-APPLIOATION FILED JULY 20.1904.

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I auoentoz .falnasffial I abbozwugd No. 796,639. PATENTED AUG. 8, 1905.

J. P. HALL. CLAY PULVERI ZING AND STONE SEPARATING MACHINE. APPLICATIONFILED JULY 20.1904.

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.l. I'll-[Iii .r I L 7 No.'796,639. PATENTED AUG. 8, 1905.

I J. P. HALL. CLAY PULVERIZING AND STONE SBPARATING MACHINE.

APPLICATION FILED JULY 20.1904.

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UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed July 20, 1904. fierial No- 217,429.

To alt whom it may concern.-

Be it known that 1, Loans P. HALL, a citizen of the United States,residing at Tuscola, in the county of Douglas and State of Illinois,have invented certain new and useful Improvements in Clay-Pulverizingand Stone-Separating Machines; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to machinery for pulverizing clay, soil, &c., andseparating from the pulverized clay, soil, and other material any rock,stone, or other hard'or foreign substance; and it consists of certainnovel features of combination and construction of parts, the preferredform whereof will be hereinafter clearly set forth and pointed out inthe claims.

The prime object of my invention, among others, is to provideamachine ofthe character specified which will not only thoroughly disintegrate orpulverize clay, soil, or other substance to fit it for use in makingtile, brick, pottery, or any other clay product, but will also removetherefrom without crushing or strain upon the machinery or partsthereof, acting directly upon the clay, such foreign substance containedtherein as rock, stone, gravel, roots, &c., and deliver such removedsubstance at one end of the machine or into a receptacle provided toreceive the same.

A further object of my invention, among others, is to provide anautomatic adj ustability of certain cooperating parts whereby unduestrain upon the machine, as in acting upon stone or other hardsubstance, will be wholly obviated or removed, such stone, rock, 850.,being promptly separated from the mass of clay with which it isincorporated and removed in the manner above set forth.

Other objects and advantages will be hereinafter made clearly apparent,reference being had to the accompanying drawings, which are made a partof this specification, and in which Figure 1' shows a side elevation ofmy machine complete ready for use. Fig. 2 is a top plan view thereof.Fig. 3 is a sectional view of Fig. l on line 3 3. Fig. 4 is a sectionalview of Fig. l on line 4: 4t; Fig. 5 is a longitudinal central sectionas indicated by line 5 5 of Fig. 2. Fig. 6 is a perspective view showingone form of yielding bearings for the crushing-rollers hereinafterreferred to in detail. Fig. 7 is an end elevation taken from theleft-hand side of Fig. 1. Fig. 8 is a detail view showing preferredmethod of mounting the bars forming the sieve or table over which theendless conveyer is designed to travel. Fig. 9 is a detail view inperspective showing one of several ways of constructing and combiningthe parts forming my endless conveyer. y

The various parts of myginvention and cooperating accessories will bedesignated by numerals, the same numedal referring to a similar partthroughout the several views.

-Briefly stated, my invention consists of a suitable framework or table,the top of which is fashioned in the form of a screen or sieve providedwith a plurality of closely-approximated bars which are placed incooperation with the endless conveyer and a plurality ofpulverizing-rollers, said rollers being yield ingly mounted, wherebythey will rise upward and permit a stoneor other hard substance to passfreely under the same without straining or injuring any of the mechanismand without crushing or pulverizing stone,rock,gravel, or other foreignsubstance in the clay, soil, or other material to be pulverized, itbeing understood that suitable driving mechanism to actuate the saidendless conveyer and rollers and certain auxiliary devices for removingthe pulverized clay are also provided.

"Referring in detail to the various parts of my invention andcooperating elements, 1 designates the base portion of the framework ofmy machine, while 2 indicates uprights mounted in any preferred way uponthe basesection, while 3 indicates cross-bars, said parts being properlyreinforced and held together by suitable end sections 4, it beingobvious that said portions of the framework may be augmented, as bycooperating bracing-sections, if deemed desirable, allof said partsbeing united together, as by suitable mortises, and tenons or bybolting, as preferred. Upon the framework thus or otherwise constructedI provide a top section or table which constitutes whatI will term ascreen or sieve, and which is made by securing a plurality oflongitudinal bars 5, having flat upper edges and spaced apart a uniformdistance, as by the blocks 6, suitable registering apertures beingprovided in said blocks and bars to receive a clamping bolt or rod 7passing through the same, whereby all of said parts will be reliablylocked in operative relationship, said blocks 6 preferably being setsothat their top surface will be slightly below thetop plane of the bars5, and the said blocks 6 are beveled at each edge from their bottom sideto their top side so that any stone or other foreign substance whichcomes in contact with the said blocks 6 will not be caught or lockedthere, but may slide up the bevel to the top of the blocks 6 and on downthe screen to be thrown off by the conveyer into the receptacle providedtherefor, the said blocks 6 presenting no obstruction to the stones,&c., by reason of the fact that said blocks are slightly below the topedge of the bars 5, as aforesaid. I wish to reserve the right to castthis screen above and hereinafter described either in one piece or inseveral pieces to be joined together; but in casting the screen will besubstantially the same construction as when made of the separatebarsthat is to say, to make the screen by casting it in one piecethroughout or by casting it in sections and joining the same together sothat the screen when cast will be the same construction and be used forthe same purpose as though it were made up of the several separate bars.I prefer to form the bars 5 so that they will be substantially V-shapedin crosssection-that is to say,

I their upper edges will be broader than the lower edges, which is toinsure that the pulverized clay or other material to be pulverized whichdrops between the upper edges of the two bars is sure to pass downwardwithout further obstruction, which would not be the case if the sides ofthe bars were parallel to each other, and so that the space between thebars will not become clogged, which would be the case if the sides ofthe bars wereparall'el to each other. I call special attention to thisshape or construction of the bars thus employed to form the screen,sieve, or table, and also the construction of the same, as I considerthis feature a valuable and important auxiliary to a perfectclaypulverizing and stone-separating machine. The V-shaped bars abovementioned are to be extended longitudinally with the frame of the tableabove mentioned, so that the stone, rock, &c., may

pass from one end of the screen to the other.

Over the screen or sieve-like table thus or otherwise constructed I havearranged to travel a plurality of clay-moving bars 8, which whenfastened with their cooperating parts or chains, I call a carrier chain,one mode of the manufacture of which is illustrated in Fig. 9, but thepreferred construc-' conveyer-chain is illustrated in detail in Fig. 9,the endless conveyer belng made up of said bars and link-sections 9,said link-sections being connected with each other by anotherlinksection, the ends of which would be on the outside of thelink-section before it and on the outside of the link-section followingit. Through-the ends of each link-section would be a hole into which theconveyer-bar is put and fastened, so that where the two link-sectionsare fastened to the conveyer-bar there would be two full ends of thesaid link-section working side by side, or the said conveyerchain mightbe constructed so that the linksection 9 would be recessed at theirends, as indicated by the numeral 10, whereby they will fit into eachother, and held pivotally together, as by the journal 11 on the bars 8;but this manner of construction is not the preferred one for the reasonthat the link-bars where they are recessed would be weak, and theconveyer-chain must be strongly constructed, The said bars 8 are heldrigidly, the oflice of said bars being to pass in close contact with andslide upon the upper edges of the bars 5 forming the screen or sievepassing under the pulverizing-roller hereinbefore and hereinaftermentioned, so as to carry the clay, soil, or other substance to bepulverized from the hopper along the screen and under the saidpulverizing-roller, so that the said clay, soil, or other substance maybe pulverized, and also to assist in conveying any of the pulverizedsubstance that has not fallen between the bars 5, so that the same willfall between thebars 5 into a trough, hereinafter mentioned, and also toassist to some degree in pulverizing the substance to be pulverized,

so that it will pass between the bars 5, and

also to force along stone, rocks, gravel, or other substance that isnotpulverized to the end of the table to be thrown off at the end of themachine or into a convenient receptacle, and to assist in pulverizingthe clay, so that it will fall between the bars 5, I provide a pluralityof pulverizing-rollers 12. it being understood that any number of saidrollers may be mounted in place as may be deemed productive of the bestresults, owing to the material to be pulverized, and each roller isprovided with trunnions or journals 13, which are mounted so as to movevertically and freely in the guideway or bearing-seats 14:, as by meansof the sliding bearing-blocks 14:. It is obvious that said bearings maybe fashioned in any desired way whereby this vertical play of thejournal will be made possible, and I therefore wish to comprehend theequivalent of the showing made in the drawings.

It will be observed by reference to the drawings that the weight of eachroller 12 is determined by the material to be pulverized and is disposeddirectly upon the endless conveyerchain and the clay or other materialto be pulverized, and it follows that should there be a stone, root, orother substance incorporated in the clay such substance or substanceswill be drawn under the roller, causing the said roller incidentally torise in its bearings and automatically drop down again into place afterthe obstruction has passed through.

The rollers 12 may be driven in any preferred way, as by means ofsuitable sprocket-wheels 15, placed in cooperation withdriving-sprockets 16 upon the driving-shaft 17 by means of sprocketchains or beltings 18, a drivingsprocket belt-wheel 19 being alsosecured to the drivingshaft 17, whereby my complete claypulverizing andstone -separating machine may be placed in cooperation with the sourceof power.

The endless conveyer made up of the elements 8 and 9 as beforeexplained,is designed to travel over the sprocket-wheels 20 and 21 andthence downward over a corresponding pair of sprocket-wheels 22 and 23,all of said wheels being suitably mountedupon carrying-shafts 24:,disposed in hearings in the framework. At the end of the machine theupper shaft 24 is extended and has keyed thereto the gear 25, placed inmesh with the driving-gear 26 upon the shaft 17. it is therefore obviousthat the endless conveyer will be caused to travel continuously when themachine is in operation.

It will be understood that the pulverizingrollers 12 may be caused torotate at the same speed with the travel of the endless conveyer or saidrollers may be rotated at a greater speed or less speed,-as may bedeemed productive of the best results.

At the receiving end of the machine I locate the hopper-section 27, openat its lower end and resting on the framework over the table orscreen-sieve, there being sufficient space between the screen or sieveand the hopper to permit the free passage of the endless conveyer or theconveyer-bars 8, it being understood that said bars may be round,square, or other shape in cross-section, as may be deemed mostdesirable.

From the foregoing description it is obvious that the clay or othermaterial to be pulverized placed in the receivinghopper is conveyedthence by the bars 8, passing successively under the hopper, the clayand the like being moved along over the screen or sieve-like table andunder the pulverizing-rollers, the result being that the clay or othersubstance intended to be pulverized Will be pulverized by the motion ofthe conveyerbars and of the pulverizing-rollers and will fall betweenthe bars 5, while the harder substances not pulverized and not intendedto be pulverized, as stone, &c., will be moved along by theconveyer-bars 8 to the end of the machine and dropped off upon theground or into a suitable receptacle placed therefor. It thereforefollows that the clay, &c., passing between the bars 5 will fall intothe receiving trough or chute 28, in which I mount in suitable bearingsthe worm shaft or screw conveyer 29, which is preferably provided at oneend with a right-hand screw and at the other with a lefthand screw,whereby the contents of clay passing into the trough 28 will be directedby said worm-shaft to a central point and there discharged through alaterally extending chute 30, leading into engagement with anotherconveyer, whereby it will be delivered at any desired point.

Upon the end of the shaft 29 I secure a beveled gear 31, placed in meshwith the beveled gear 32 upon the shaft 17, thereby insuring that theshaft 29 will be continuously driven during the operation of the othermechanism or machinery.

Inasmuch as any well-known form of conveying appliance may be placed incooperation with the delivery-chute 30, I deem it unnecessary to enterinto a specific description thereof.

It will of course be obvious that the return part of the endlessconveyer may be disposed at a higher point than I have shown in thedrawings, in which case the receiving-trough 28 may be located at thebottom of the machine, the arrangement of said parts being a matter ofdetail which I shall leave to the expediency of manufacture. To preventthe return part of the conveyer from unduly sagging, a suitable rolleror rollers 33 may be properly mounted in the base member l'or contiguouspart of the framework, as will be obvious.

It is thought from the foregoing descrip tion, considered in connectionwith the accompanying drawings, that the nature of my invention will beclearly apparent, th ugh it may be stated that the operation thereof isas follows: The clay is thrown into the hopper, where it falls upon theend of the screen or sieve-like table and in engagement with the movingbars 8. The clay is therefore caused by the endless conveyer to travelover the screen or sieve-like table and under the pulverizing-rollers12, the result being that the clay or other substances to be pulverizedwill be pulverized and will fall through the screen or sieve, whileother substances, as rock, stone, and the like, not intended to bepulverized will not be pulverized, the pulverizingrollers rising intheir adjustable bearings to allow the said substances to pass underwithout crushing, and the last-mentioned substances not pulverized andnot intended to be pulverized will be moved along the said screen orsieve-like table by means of transverselylocated bars 8, and finallypassed off at the end of the machine opposite the hopper-section, andsince the bars 5 in the cross-section are tapered at their lower edge itfollows that any substance that drops between the upper edges of saidbars either of its own accord or on account of the rubbing motion of thebars 8 will readily drop into the receptacle or trough-like member 28and be delivered therefrom by the rotating worm above referred to.

While I have described the preferred combination and construction ofparts deemed necessary in materializing my invention or showing apractical application thereof to use, it will be understood that I wishto comprehend in this application all substantial'equivalents andsubstitutes as maybe considered as falling fairly within the scope andpurview of my intention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A clay-pulverizing and stone-separating machine comprising a frame, ascreen mounted upon the frame, an endless conveyer having transversepulveriZing-barsadapted to slide upon the screen and to force hardsubstances to the end of the screen, and pulverizing-rollers normallysupported upon the endless conveyer and adapted to work in conjunctionwith the pulverizing-bars and to yield to hard substances passingbeneath them, as set forth.

2. A clay-pulverizing and stone-separating machine comprising a frame, ascreen consisting of longitudinal, closelyarranged bars mounted upon theframe, an endless conveyer having transverse pulverizing-bars adapted toslide upon the screen and to force hard substances to the end of thescreen, and pulverizing-rollers normally supported upon the endlessconveyer and adapted to work in conjunction with the pulveriZing-barsand to yield' to hard substances passing beneath them, as set. forth.

3. A clay-pulverizing and stone-separating machine comprisingaframe,ascreen mounted upon the frame, an endless conveyer having transversepulverizing-bars adapted to slide upon the screen and to force hardsubstances to the end of the screen, guideways mounted upon oppositesides of the screen, bearingblocks mounted in the guideways and adaptedto slide freely therein, and pulveriZing-rollers journaled in thebearing-blocks and normally supported upon the endless conveyer. andadapted to work in conjunction with the pulverizing-bars, as set forth.

4.. A clay-pulverizing and stone-separating machine comprising a frame,a screen mounted upon the frame, an endless conveyer having transversepulverizing-bars adapted to slide upon the screen and to force hardsubstances to the end of the screen, pulverizing-rollers normallysupported upon the endless conveyer and adapted to work in conjunctionwith the pulverizing-bars and to yield to hard substances passingbeneath them, means for dI'IV-..

ing the pulverizing-rollers independently of each other, and adriving-shaft common to all of the means for driving the pulverizing:rollers.

5. A clay-pulverizing and stone-separating machine comprisingaframe,ascreen mounted upon the frame, an endless conveyer having transversepulverizing-bars adapted to slide upon the screen and to force hardsubstances to the end of the screen, pulverizing-rollers normallysupported upon the endless conveyer and adapted to Work in conjunctionwith the pulverizing-bars and to yield to hard substances passingbeneath them, means for driving the endless conveyer, and means fordriving the pulverizing-rollers independently of the means for drivingthe endless conveyer and a driving-shaft common to both of said means.

6. A clay-pulverizing and stone-separating machine comprisingaframe,ascreen mounted upon the frame, an endless conveyer havingtransversepulverizing-bars adapted to slide upon the screen and to force hardsubstances to the end of the screen, pulverizing-rollers normallysupported upon the endless conveyer and adapted to work in conjunctionwith the pulveriZing-bars and to yield to hard substances passingbeneath them, a receivingtrough located beneath the screen, having alaterally-extending chute, and a screw con veyer working in the trough.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES P. HALL.

